Finding the Third Proportional to 72,639 and 112,522.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,639 : 112,522.50 = 112,522.50 : x
2. Step 2: Convert to fraction form
   72,639/112,522.50 = 112,522.50/x
3. Step 3: Cross multiply
   72,639x = 112,522.50 × 112,522.50
4. Step 4: Simplify right side
   72,639x = 12,661,313,006.25
5. Step 5: Solve for x
   x = 12,661,313,006.25/72,639
6. Step 6: Final answer
   x = 174,304.62